Hopping的图书会按更新时间持续补充，适合从代表作和同主题书继续延展阅读。
25 Super Cool Math Board Games
Egan, Lorraine Hopping
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15 Primary Source Activities
Hopping, Louise/ Egan, Lorraine Hopping
1-2-3 Reading and Writing
Warren, Jean/ Ekberg, Marion Hopping
